With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.25850-22-0,2,2-Dimethyltetrahydro-2H-pyran-4-amine,as a common compound, the synthetic route is as follows.
Production Example 321 (0641) 5-Benzyloxymethylisoxazole-3-carboxylic acid (0.24 g, 1.0 mmol), 4-amino-2,2-dimethyltetrahydropyran (0.18 ml, 1.2 mmol) and 1-hydroxybenzotriazole (0.01 g, 0.1 mmol) were added to chloroform (amylene addition product) (2.5 mL). 1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (0.24 g, 1.2 mmol) was added to the mixture at room temperature, and the mixture was stirred overnight. Then, dilute hydrochloric acid was added thereto, and the mixture was extracted twice with chloroform. The organic layer was passed through a short column to remove impurities, and then concentrated under reduced pressure. The residue was applied to a silica gel column chromatography to obtain 0.29 g of N-(2,2-dimethyltetrahydropyran-4-yl)-5-benzyloxymethylisoxa zole-3-carboxamidc: (hereinafter, referred to as Compound of Present Invention (335)) represented by the following formula. 1H-NMR(CDCl3, TMS, delta(ppm)):1.26(3H, s), 1.29(3H, s), 1.33-1.40(1H, m), 1.41-1.52(1H, m), 1.89-2.00(2H, m), 3.72-3.84(2H, m), 4.27-4.38(1H, m), 4.61(2H, s), 4.65(2H, s), 6.62(1H, br s), 6.72(1H, s), 7.30-7.40(5H, m)
25850-22-0, As the paragraph descriping shows that 25850-22-0 is playing an increasingly important role.
Reference£º
Patent; Sumitomo Chemical Company, Limited; MITSUDERA, Hiromasa; AWASAGUCHI, Kenichiro; AWANO, Tomotsugu; UJIHARA, Kazuya; EP2952096; (2015); A1;,
Tetrahydropyran – Wikipedia
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